Dust bag



Aug. 29, 1933. M. MARSHLL DUST BAG Filed Sept. 1:2, 1932 fici. 6.

l JWM/701? Marga/ef Marsha/ Patented Ang. 29, 1933v UNITED STATES1,924,249 DUs'r BAG Margaret Marshall, Vancouver, British Columbia Canad'Application September 12, 1932 Serial No. 632,853

3 claims. (o1. isa-51) This invention relates tov improvements in vacuumcleaner dust bags and is particularly designed as an improvement on myprevious application filed 'January 17th, 1931 under Serial No.

5 509,465 and issued October 4, 1932 under Patent Number 1,88l,086 foranAuxiliary container designed to fit the usual fabric dust bag of avacuum cleaner. j

The present invention has for its particular object the elimination ofthe continual agitation of the whole of the dust contents of the bag bythe air stream from the fan.

-Another particular object of my invention is to provide quick, easy andconvenient means of l'15- discharging the dust contents of the bag.

Still another object of my invention is to provide a more sanitary dustbag thanthe usual fabric bag and having all the advantages of myprevious invention. '2O l A still further object of my present inventionis to provide a cheap 'and economical paper dust bag readily replaceableat small cost and having sanitary features not enjoyed by the usualfabric a long discharge spout 'A1,' the outer end of which is flanged-at,8 to comprise a' registering flange 80 dust bag.

" With these and other objectsin View I have invented the subject matterof this application y cleaner. trated in the accompanying drawing, andspev stricted to fit snugly around the ,spout 'I and .the 'endsofthetbag are crimped and turned 85 rightangularly at 9"`to vcomprise areinforcement to the ange 8of the spout.'

which is hereinafter fully described'and illuscically pointed out in theappended claims, it

30 being understood, ofcourse, that minor changes may be made so longasthey fall within `the scope of the claims. y

In `describing my invention reference will be made to the accompanyingdrawing, whereinlike` folding top of the dust bag and shows a row ofholes that register when the top is folded over. Two of the holes areshown having reinforcement thereto.

Figure 4 is a detail View of the opposite side of the bag to that shownin Figure 3 and shows the back section of the bag extending beyond thefront section and having a reinforcement 5 'and folding strip securedthereto.

Figure 5 is a sectional edge or side view of the back and front sectionsof the paper dust bag when closed together ready for folding to' closethe top and shows the'reinforcing strip secured to the hack section.

Figure 6 is a detail sectional view of the top of the bag vinthe firstsingle fold and shows reinforcing and folding strip intermediate of the.front and back sections of the paper dust bag.

Figure Tis a detail sectional view of the top lof thebag completelyfolded to form a ldust tight joint. y I

i In the drawing j the numeral lv indicates a vacuum cleaner generallyand 2 the handle por- .tion`to the upper end of whichis: attached a cord3 forfsecuring thereto lthe top. of apaper dust bag, 4, the lower end ofwhich is aflii'ied to the usual dischargeend 5of4 the vacuumcleaner.

. The paper dust bag vshown in the drawing is provided withforaminousair vents 6 to permit 75 theescape of air from the bag while retainingthe dust contents.' n

Fitted insidethe lower end of the'bag 4 is to fit the V discharge` end 5of the vacuum The lower end'ofl the paper dust bag 4 is re- Around theoutside ofthe restricted end of the bag 4 surroundingtlliefspouty'Ivis'a binding and reinforcing'strip lfone'edgefof which' is 90 iturned right-angularly at `11` toc'ornprise additional reinforcement tothe 'flange' 8.

The lower portion of the' b'ag 4" 's" of double thickness at 12 and theinside bottom edge abuts the flange 8 while the outer edge is turnedright` 95 angularly at 9 to reinforce the flange 8.

The construction above recited is clearlylv shown in Figure 2. y

The top of the paper bag is` open-ended and has one portion 13 (theback) a little longer than the other portions of the bag.

To the longer portion is attached a reinforce/, ing and folding strip 14(see Figures 4 and 5) and the opposite or front side of the bag 15 105is designed to fit immediately below the strip 14 when the two sides ofthe bag are closedl together (see Figure 5). In'the centre of th-g twosides of the bag 13 and 15 is formed a longitudinal row of apertures 16,one of which strip 14.

The two lower apertures on the back 13 arek reinforced at 17 forpurposes which will appear apparent a little later in this description.The

apertures 16 are spaced apart in such order that when the top of the bag4 is closed and folded over the folding strip 14 they will all registertogether.

The bag 4 is designed to be closed by being folded in a number of timesover the folding strip 14 to comprise a dust-proof joint and when sofolded `all the apertures register and the two lower reinforcedapertures appear one on each side of the folded end of the bag (seeFigure '7) Figure 6 shows the flrst step or fold when closing-the endlof the bag 4 and shows the folding strip 14 acting as a spacer wherebythe apertures 16 are caused to register when the end of the bag iscompletely closed and folded, as in Figure 7.

The particular object and purpose served by the inner extending endofthe spout 'I is to create a settling chamber for the dust contentsdischarged into the bag from the vacuum cleaner.

In ordinary vacuum cleaners and dust bags the accumulated dust contentsare kept in a continual stage of agitation by the incoming air streamdischarged into the bag from the fan and when a .large amount of dusthas accumulated in the bag the air stream keeps the dust contents in aviolent stage of agitation that in time penetrates into every intersticeof the dust bag and causes the bag to leak fine dust lparticles into theroom.

With my invention of providing a settling chamber within the. bagimmediately around the neck of the discharge spout 'I this objection islargely removed as the length of the spout is -such that when sufficientdust has accumulated in the bag to .cover the inner end of the spout 7the bag should be emptied and cleaned of the contents.

After the bag 4 has its upper end closed by being folded over to causethe apertures 16 to register, it is secured'to the handle 2 of thevacuum cleaner Aby passing the end of the cord 3 through the apertures16 and tying the cord upon itself.

The spout l is formed from smooth, sti paper that permits ofreadypassage of dust laden air fromlthe fanof the vacuum cleaner and theinner extremity is positioned opposite the reinforced bottom 12 of thebag 4 and such reinforcement is vitally necessary in a paper bag, assuch articles as matches that are readily picked vup by the suction of apowerful fan willreadily penetrate a single ply paper as they aredischarged into the bag with considerable force. The walls of the bag 4are constructed of a `tough and flexible paper that will not permit thepassage of fine dust contents therethrough. Having now described myinvention, what I claim and desire to be protected in by Letters Patent,is: v

1. In a paper dust bag for vacuum cleaners having an air vent,comprising in combination therewith an elongated discharge spoutextending inwardly of said bag, said spout having its outer end turnedapproximately right angularly to form a ange, a restricted bottomportion to said bag adapted to tsnugly around said discharge spout andto reinforce said flange, a binding and reinforcing strip wrapped aroundthe restricted bottom portion of said bag surrounding said spout andhaving one edge turned angularly to build up and reinforce said flange,a reinforced bottom layer to said bag positioned to receive the impactof the incoming air stream and dust contents from said vacuum cleaner,an open top to said bag', and means to close said top tocomprise adust-proof joint, andmeans to hang said top to the handle of a vacuumcleaner.

2. In a paper dust bag for vacuum cleaners having an air vent comprisingin combination therewith, an elongated discharge spout positioned at thebottom of said bag and extending inwardly thereof, a settling chamberformed entirelyaround said spout, a reinforced bottom layer to said bag,an open top to said bag having one portion longer than the otherportions of said bag, a reinforcing and folding strip secured upon saidlonger portion, a series of apertures formed in two sides of said opentop, said apertures designed to register when said sides are closedtogether and folded to comprise a dust-proof joint, and means to securesaid folded top to the handle of a vacuum cleaner.

3. In a paper dust bag for vacuum cleaners having an air vent comprisingin combination therewith, an elongated discharge spout positioned at thebottom of said bag and extending inwardly thereof, a settling chamberformed entirely around said spout, a reinforced bottom layer to saidbag, an open top to said bag having one portion longer than the otherportions of said bag, a reinforcing and folding strip secured MARGARETMARSHALL.

